package com.scst.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.page.PageMethod;
import com.scst.constant.MessageConstant;
import com.scst.constant.StatusConstant;
import com.scst.context.BaseContext;
import com.scst.dto.EmployeeDTO;
import com.scst.dto.EmployeeLoginDTO;
import com.scst.dto.EmployeePageQueryDTO;
import com.scst.entity.Employee;
import com.scst.exception.AccountLockedException;
import com.scst.exception.AccountNotFoundException;
import com.scst.exception.PasswordErrorException;
import com.scst.mapper.EmployeeMapper;
import com.scst.result.PageResult;
import com.scst.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;
    private PageMethod PageHelper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }
    //新增员工
    @Override
    public void save(EmployeeDTO employeeDTO) {

    }
    //分页查询
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) throws InterruptedException {
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> page=employeeMapper.pageQuery(employeePageQueryDTO);
        long total=page.getTotal();
        List<Employee> records=page.getResult();
        return new PageResult(total,records);
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Employee employee =new Employee();
        employee.setStatus(status);
        employee.setId(id);
        employeeMapper.update(employee);
    }

    @Override
    public Employee getById(Long id) {
        Employee employee =employeeMapper .getById(id);
        return employee ;
    }

    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee=new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        employee .setUpdateTime(LocalDateTime.now());
        employee .setUpdateUser(BaseContext.getCurrentId()) ;
        employeeMapper.update(employee);
    }
}
